Time-lapse of engraving Aluminium sandwich material with my an ASCII-Art-Saturn. 3.18mm graver with 0.1mm tip. Cannot recommend this tool for the material.
Still, image quality turned out well. Background story here: https://blog.schallbert.de/en/halftone-image-on-dibond/ Image source: https://asciiart.website/index.php?art=nature/astronomy